ધોરણ 6 વિજ્ઞાન સ્વ અધ્યયનપોથી || Std 6 science ch.12 || dhoran 6 vigyan swa Adhyayanpothi path 12 | std 6 science gujarati medium | Gujarat board std 6 science ch 12 solution | std 6 science ch 12 swadhyay solution

2x - ky +7=0 and 6x - 12 y +15 =0 has no solution for

For what value of k given pair of equation has no solution ? kx + 3y = 3, 12 x + ky = 6

Show graphically that the system of equations 2x + 4y = 10 and 3x + 6y = 12 has no solution.

Out of 100 students, 15 passed in English, 12 passed in Mathmatics, 8 in Science, 6 in English and Mathematics, 7 in Mathematics and Science , 4 in English and Science, 4 in all the three. Find how many passed (i) in English and Mathematics but not in Science. (ii) in Mathematics and Science but not in English. (iii) in Mathematics only. (iv) in more than one subject only.

Do the following pair of linear equations have no solution? Justify your answer. 2x+4y= 3 12y + 6x= 6

Out of 100 students who appeared for the SSC examination from a school 15 students in English ; 12 students in Mathematics; 8 students in Sience 7 studens in Mathematics and Science; 4 students in English and Science 6 students in English and Mathematics; 4 students in all the three subjects could get First calss marks. How many of them have got First class marks.(ii) only in Science (i) only in Mathmatics

At 90^(@)C pure water has K_(w) = 10^(-12) . The solution with pH value 6.5 is

A solution with pH = 12 is more acidic then one with a pH = 6 by a factor of